Stackable chair



FIG. 1 is a left, front perspective view of a stackable chair showing mynew design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof, the right side being symmetrical;

FIG. 4 is a top view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a bottom view thereof.

The fragmented pattern shown on the bottom in FIG. 6 is understood torepeat uniformly throughout the area shown.

The ornamental design for a stackable chair, as shown and described.